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DOI | 10.1080/02626667.2016.1174335 |
An approach to measure parameter sensitivity in watershed hydrological modelling | |
Ranatunga, Thushara1; Tong, Susanna T. Y.1; Yang, Y. Jeffrey2 | |
发表日期 | 2017 |
ISSN | 0262-6667 |
卷号 | 62期号:1页码:76-92 |
英文摘要 | Hydrological responses vary spatially and temporally according to watershed characteristics. In this study, the hydrological models that we developed earlier for the Little Miami River (LMR) and Las Vegas Wash (LVW) watersheds in the USA were used for detailed sensitivity analyses. To compare the relative sensitivities of the hydrological parameters of these two models, we used normalized root mean square error (NRMSE). By combining the NRMSE index with the flow duration curve analysis, we derived an approach to measure parameter sensitivities under different flow regimes. Results show that the parameters related to groundwater are highly sensitive in the LMR watershed, whereas the LVW watershed is primarily sensitive to near-surface and impervious parameters. The high and medium flows are more impacted by most of the parameters. The low flow regime was highly sensitive to groundwater-related parameters. Moreover, our approach is found to be useful in facilitating model development and calibration. |
英文关键词 | Sensitivity analysis;HSPF;NRMSE;flow duration curve;model development;model calibration |
语种 | 英语 |
WOS记录号 | WOS:000388616800007 |
来源期刊 | HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/57909 |
作者单位 | 1.Univ Cincinnati, Dept Geog, Cincinnati, OH 45220 USA; 2.US EPA, Off Res & Dev, Natl Risk Management Res Lab, Cincinnati, OH 45268 USA |
推荐引用方式 GB/T 7714 | Ranatunga, Thushara,Tong, Susanna T. Y.,Yang, Y. Jeffrey. An approach to measure parameter sensitivity in watershed hydrological modelling[J]. 美国环保署,2017,62(1):76-92. |
APA | Ranatunga, Thushara,Tong, Susanna T. Y.,&Yang, Y. Jeffrey.(2017).An approach to measure parameter sensitivity in watershed hydrological modelling.HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES,62(1),76-92. |
MLA | Ranatunga, Thushara,et al."An approach to measure parameter sensitivity in watershed hydrological modelling".HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES 62.1(2017):76-92. |
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